A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 5/30 (2006.01)
Patent
CA 2491302
A jet injector comprising a housing (1) to be pressurized and holding a medical drug and which is defined by an enclosing periphery wall (3) and a bottom wall (4) having an internal surface (5) facing the interior of the housing (1) and opposite external surface (6). The bottom wall (4) has a through, truncated cone-shaped aperture (8) extending between said internal (5) and external (6) surfaces and through which said medical drug is expelled from the housing (1) and transformed into a thin jet stream (18) penetrating the skin of said person to be treated. An insert (9) having an essentially cone-shaped body (10) is arranged to be inserted into said housing (1) such that a portion (13) of said cone-shaped body (10), the periphery wall (39) of which is essentially congruent to the wall (12) of said aperture (8), is received in said aperture (8). At least one passage (7) is established between said portion (13) of said cone-shaped body (10) and the aperture wall (12) through which the medical drug is expelled from the housing (1). The drug then flows along said essentially cone-shaped body (10) to be delivered from the point (14) of the cone-shaped body (10) as a coherent, thin jet stream (18).
L'invention concerne un injecteur compressif doté d'un logement (1) à pressuriser et servant à contenir un médicament, ledit injecteur étant formé par une paroi périphérique d'enveloppement (3) et une paroi inférieure (4) munie d'une surface interne (5) faisant face à l'intérieur du logement (1) et d'une surface externe opposée (6). La paroi inférieure (4) comporte une ouverture en forme de cône tronquée, traversante (8) s'étendant entre lesdites surfaces interne (5) et externe (6), et par laquelle ledit médicament est expulsé du logement (1) et transformé en un jet mince (18) pénétrant la peau d'une personne à traiter. Un insert (9) comprenant un corps pratiquement en forme de cône (10) est disposé pour être introduit dans ledit logement (1), de telle manière qu'une portion (13) dudit corps en forme de cône (10), dont la paroi périphérique (39) est pratiquement congruente à la paroi (12) de ladite ouverture (8), est logée dans ladite ouverture (8). Entre ladite portion (13) dudit corps en forme de cône (10) et la paroi de l'ouverture (12) est établi au moins un passage (7), à travers lequel le médicament est expulsé du logement (1). Le médicament peut s'écouler le long dudit corps en forme de cône (10), de manière à être administré du point (14) du corps en forme de cône (10) comme un flux de jet mince homogène (18).
Hjertman Birger
Pfizer Health Ab
Sim & Mcburney
LandOfFree
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